402396 has 12 divisors (see below), whose sum is σ = 938952. Its totient is φ = 134128.

The previous prime is 402383. The next prime is 402403. The reversal of 402396 is 693204.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

402396 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16755 + ... + 16778.

It is an arithmetic number, because the mean of its divisors is an integer number (78246).

2⁴⁰²³⁹⁶ is an apocalyptic number.

It is an amenable number.

402396 is an abundant number, since it is smaller than the sum of its proper divisors (536556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402396 is a wasteful number, since it uses less digits than its factorization.

402396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33540 (or 33538 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 402396 is about 634.3469082450. The cubic root of 402396 is about 73.8274528633.

The spelling of 402396 in words is "four hundred two thousand, three hundred ninety-six".